Analysis of Rapidity Gap Cuts in Diffractive DIS

Abstract

The requirement of a large pseudo-rapidity gap to select diffractive DIS events at HERA restricts the kinematically accessible region of phase space for a significant range of $Q^2$, $\beta$ and $\text{xpom}$. Consequences of this include a breakdown of $\text{xpom}$-factorization in large rapidity gap diffractive samples and an enhancement in the relative contribution of quark-antiquark-gluon processes over dijet processes in the diffractive DIS sample.

Comments: LaTeX, 3 pages, 2 figures in PS files, uses npb.sty. Contribution to the Proceedings of the 7th International Workshop on Deep Inelastic Scattering and QCD, DIS99, DESY-Zeuthen, April 1999; Nucl. Phys. B (Proc. Suppl.)